Disentangling the Controls and Orbital Pacing of SE Atlantic Carbonate Deposition Since the Oligocene

Disentangling the Controls and Orbital Pacing of SE Atlantic Carbonate Deposition Since the Oligocene

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Intro

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Intro

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Disentangling the Controls and Orbital Pacing of SE Atlantic Carbonate Deposition Since the Oligocene

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  1. 1 Intro
  2. 2 The last 34 Myr documents the evolution from a unipolar to bipolar world
  3. 3 Carbonate deposition is an important part of the carbon cycle
  4. 4 Carbonate deposition in the Atlantic Ocean was poorly understood
  5. 5 X-Ray Fluorescence Core Scanning unlocks the sediments chemical composition
  6. 6 We XRF core scanned the entirety of Site 1264 between 2011 and 2018
  7. 7 The XRF data could help ensure stratigraphic continuity
  8. 8 CODD: generate composite core photos...
  9. 9 CODD: ... and composite splice core photos
  10. 10 We used different tuning approaches from 8-0 Ma because eccentricity was weaker
  11. 11 The orbital imprint on Caco, deposition shows three distinct phases
  12. 12 Eccentricity-paced cyclicity (dissolution?) dominates during Miocene warmth
  13. 13 The MCO may have been preconditioned by early Miocene warmth
  14. 14 Precession-driven deposition prevails after the mid Miocene climate transition
  15. 15 High-latitude biomes drove this
  16. 16 The stronger high-latitude processes coincide with the -8 Ma onset of the LMBB
  17. 17 The LMBB is globally recognised, but the origins are not yet understood
  18. 18 The LMBB onset seems synchronous between the Atlantic and the Pacific
  19. 19 Increased nutrients may come from...
  20. 20 The global nutrient distribution may reflect regional differences in...
  21. 21 New insights into the LMBB indicate...
  22. 22 CODD: Code for Ocean Drilling Data
  23. 23 Current version CODD 2.1 for IGOR Pro 7 & 8
  24. 24 A 30 million year CaCO, view of climate, cry and carbon cycle interactions

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